Filters for astrophotography

[johnhirst1]

Just getting started in astrophotography and bamboozled by the choice of filters. I have a few 1 1/4" filters for my eyepieces but nothing I could use when attaching my camera direct. What filters are {mandatory) for astrophotography? and where in line would I attach them. 

Sorry if the answers are abvious to all you guys. Help much appreciated. 

John

[geordie85]

What camera are you using?

What scope are you using?

Are you using a flattener/ reducer/ coma corrector?

[Astrosurf]

If I'm correct (and I'm not good on filters!) the filters you have with you EPs (that came with your kit?) would be for visual only. I don't mind being corrected!

The main filter to use for AP is a light pollution filter, if needed. Ask on here for the best one. I have the Astronomik EOS Clip-in LPF for my canon. http://www.astronomik.com/en/clip-filter-system.html. 

There are narrowband filters but they're for specialist AP so ignore those for now!

Do get the imagers' bible before you start imaging! Read and read and read . . .  http://www.firstlightoptics.com/books/making-every-photon-count-steve-richards.html

Alexxx

[MarsG76]

You can also use 1.25" or 2" filters with a filterwheel.

I use 1.25" filters on my modded canon 40D DSLR and I find that with the APS-C sensor size the vignetting is minimal... Nothing that a flat frame won't fix.